On all bmw models up through the late 90s the auxiliary or main fan is controlled by one or two thermostatic switches that are mounted into the radiator side or bottom tanks.
E46 cooling fan relay location.
You want all of the parameters to be properly met so that everything.
The aux fan relay is located on the fan shroud on e46 vehicles.
1 k6300 sky blue relay dme 2 k6325 ultra sky blue relay reversing light auto only or k6318 smg pump m3 w smg only salmon 3 k6326 unloader relay salmon or white green or k6327 fuel injector relay.
Relay r1 main relay relay r2 cooling fan relay relay r3 catalytic converter relay r4 vacuum pump relay relay r5 receiver transmitter relay r6 direction indicator relay r7 cut off relay relay r8 terminal 15 relay.
Almost all modern vehicles rely upon electric cooling fans to pull air through the vehicle radiator to keep the engine cool.
For the bmw 3 e46 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 model year.
Fuse box in engine compartment near the battery.
There is no engine driven mechanical fan.
It is a rectangular box with wires going to a harness and two wires going to the fan motor.
It is not a replaceable part and comes.